One end is the 5.5 mm 2.5MM DC female interface, the other end is two male 5.5 mm 2.5MM DC interface, the wire is not equal design, the short line is 18cm, the long line is 158cm, the inner core is pure copper, the wire is soft, you can access the same interface power supply, to two devices with the same voltage output at the same time. This can save a power supply, but the main power supply should use a larger power, otherwise the equipment will not work normally, the line weight is 64.2 grams